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In summer, the most common fault of air compressors is high temperature. Excessively high exhaust temperature in air compressors is a common issue in summer, and it often fails to draw the attention of operators. Excessively high exhaust temperatures over an extended period can lead to reduced production efficiency, increased wear and tear on the equipment, shortened equipment lifespan, and in severe cases, even explosions! Therefore, it is very important to take proper measures to prevent high temperatures in air compressors, so as to keep them functioning well throughout the summer and ensure the smooth operation of business operations. To prevent high-temperature failures in air compressors, the following aspects need attention: 1. Ambient temperature. High temperatures in air compressors can sometimes be caused by an improper design of the compressor room, resulting in poor ventilation; the heat generated by the compressor cannot be discharged from the room. When hot air is drawn into the compressor, it leads to excessively high exhaust temperatures, which in turn causes frequent high-temperature failures in the compressor. The optimal operating temperature for air compressors is between 30°C and 40°C. The high temperatures in summer and the hot weather are even more pronounced in factory workshops. Therefore, the ventilation system of the air compressor station should be improved as much as possible in summer. Exhaust fans can be added to the air compressor room; the intake and exhaust openings should be located on walls facing the outdoor area, so as to expel the hot air from the room and thereby reduce the temperature. Hot heat sources should not be placed around the air compressor. If the temperature around the machine is high, it will cause the temperature of the air drawn in to rise, and the oil temperature and exhaust temperature will also increase accordingly. 2. Check the amount of lubricating oil: The level of lubricating oil can be checked via the oil sight glass on the oil-gas tank. If the oil level is below the normal range, the machine must be shut down immediately, and an appropriate amount of lubricating oil added to prevent overheating of the unit. The quality of the lubricating oil is poor; once it exceeds its service life, it tends to degrade, resulting in poorer fluidity and reduced heat exchange performance. This can prevent the compressor head from being adequately cooled, leading to overheating of the air compressor. Additionally, screw air compressors require the use of specialized lubricating oil. If inferior lubricating oil is used instead of the designated type, under high-temperature conditions, it becomes difficult for the oil to protect the various components inside the compressor. This, in turn, causes the exhaust temperature to remain excessively high. Furthermore, low-quality lubricants often contain many impurities, which cause the air compressor to emit foul-smelling gases that affect the environment. 3. Filter element performance: The air filter element, oil filter element, and oil separator element are clogged. Clogged air filters can cause the air compressor to be overloaded; prolonged operation under such conditions leads to excessive heat ； A clogged oil filter reduces flow rate, and the air compressor can reach high temperatures due to inadequate heat dissipation. Oil blockage can lead to high internal pressure and high temperatures. 4. Cooler: Check whether the cooler is clogged. The most direct consequence of a clogged cooler is poor heat dissipation, which causes the unit to overheat. Remove residues and clean the clogged cooler to prevent the compressor from overheating. Check whether the cooling fan and fan motor are functioning properly and if there are any faults. For water-cooled air compressors, the inlet water temperature can be checked; it should generally not exceed 35°C, while the water pressure should be between 0.4 and 0.6 Mpa. If the requirements cannot be met, a cooling tower can be installed. 5. Temperature sensor: A failure of the temperature sensor can lead to false alarms indicating excessive temperature rises, thereby causing the system to shut down. If the temperature control valve fails, the lubricating oil may flow directly into the machine head without passing through the cooler, preventing the oil temperature from dropping and resulting in high temperatures. In short, even a minor oversight in operation can cause overheating problems in our air compressors; therefore, when operating them on a daily basis, it is essential to follow the proper operating procedures to ensure that the air compressors function effectively and help improve our work efficiency. At the same time, in hot weather, compressed air itself needs to be treated to remove oil; whether it is the oil content in the air or the organic lubricating oil in the air compressors, high temperatures can pose a risk of explosion. If the oil content is high and the quality of the gas used is good, it is recommended to use activated carbon oil removal filters or catalytic oxidation oil removal filters; ordinary filters will not achieve very satisfactory oil removal results over an extended period of time.